Marlowe

Marlowe is an analytical AI tool from Authors A.I. that reads a complete novel manuscript and gives developmental feedback plus market positioning advice, for fiction writers who want editor-style notes before paying for a human edit. It deliberately does not write or rewrite your prose. Instead it measures structure, pacing, character and other craft elements and compares your book with bestsellers in its genre, then a separate report helps with comps, keywords and descriptions for selling the finished book.

What is Marlowe used for?

Marlowe is used between drafts, when a writer needs an outside read of the whole book, and again before publishing.

• Getting an overall assessment of a manuscript's strengths and weaknesses
• Analyzing plot, pacing, story structure and narrative arc against genre bestsellers
• Reviewing character depth, dialogue, themes and subplots
• Receiving a short list of revision priorities for the next draft
• Generating 20 comparable titles, Amazon backend and ad keywords, and three book descriptions with the Market Fit report
• Running a new report after each revision to track how the manuscript improves

Who Marlowe is best for

Marlowe suits indie authors, self-publishers and traditionally published novelists in genres such as romance, thriller, fantasy and science fiction who want structured feedback quickly. It also helps authors preparing a book for launch who need keywords and descriptions. Non-fiction writers and people who want AI to draft scenes for them should look at other tools.

Marlowe pricing

As of October 2026, Marlowe Basic is free and gives a starting report. The Marlowe Pro craft and structure report costs $29.95 per manuscript, or $19.95 per month with a subscription. The Market Fit report costs $29.95, and a bundle of Pro and Market Fit for one manuscript costs $39.90, which Authors A.I. says saves $20 compared with buying them separately. Prices are as listed on the official site, so confirm the current offer before buying.

Limitations to keep in mind

• Analysis is tuned to commercial fiction and genre comparisons
• It flags issues and priorities but does not replace a human editor's judgment on voice
• Market Fit keywords and comps are suggestions that still need checking in the store

Marlowe vs alternatives

ProWritingAid is the better choice for sentence-level editing, style and grammar reports while you write, and it includes some manuscript-level checks. Sudowrite helps you draft, expand and rewrite scenes with fiction-focused AI, which Marlowe will not do. Hemingway Editor Plus targets readability and clarity at the sentence level. Squibler is aimed at writers who want AI to help produce a book quickly. Marlowe wins when you want a whole-book developmental read and market positioning without generated text.

Tips for getting started with Marlowe

Run the free Basic report on a complete draft first, since structure and pacing analysis is most useful when the whole story is present. Pick the most accurate genre for the comparison, because feedback is measured against bestsellers in that category. Work through the top revision priorities before rerunning Pro, so you can see whether the changes moved the scores.

Marlowe FAQ

Is Marlowe free?

Partly. Marlowe Basic is free, while the Pro report costs $29.95 per manuscript or $19.95 per month, and Market Fit costs $29.95.

Does Marlowe write my book for me?

No. Marlowe is analytical AI that reads and critiques your manuscript, and Authors A.I. says it never writes your book.

Is my manuscript safe with Marlowe?

Authors A.I. says drafts are never used for AI training, no human sees them unless you share them, and you can delete your data at any time.

What is the best alternative to Marlowe?

ProWritingAid is a strong alternative for line editing and style reports, while Sudowrite suits authors who want AI drafting help.